Dust-collector for cleaning apparatus



w. w. FARNSWORTH. DUST COLLECTOR FOR CLEAA HNG APPARATUS. APPLICATION FILED MAY 14, 1920.

1,357,390. Patented Nov. 2, 1920.

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WILLIAM W. FARNSWORTH, 01' LITTLETON, C0110 DUST-COLLECTOR FOR. CLEANING APPARATUS.

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Specification of Letters Patent.

Patented Nov. 2, 1920.

To all whom it may concern:

Be it known that I, WILLIAM W. FARNs- WORTH, a citizen of the United States, residing at Littleton, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Dust- Collectors for Cleaning Apparatus, of which the following is a, specification.

In my application Serial No. 372251, which is a division of my original application Serial No. 294672, there is shown and described a dust or impurities collecting bag or receptacle particularly adapted though not necessarily limited in its use with the type of cleaning apparatus disclosed in the last mentioned application, and which receptacle embodies an air-tight bag or receptacle having its walls constructed of material impervious to air and provided with a filter or cleaner therein through which the dust-ladened air passes to purify the air, the receptacle being provided with an inlet and outlet for air currents, the inlet and outlet being out of communication with each other except through the filter.

This type of receptacle is desirable and necessary with the type of apparatus referred to in order that the purified a'ir Wlll flow through the outlet opening with considerable pressure to cause the apparatus to function as designed.

It has been found that it is sometimes desirable and advantageous to divert as much of the air currents as possible within the receptacle before they pass through the outlet opening and cause them to flow from the receptacle, after they have been filtered and without causing them to pass through the said outlet.

It is one of the objects of the present invention to provide means whereby these and other new and useful results may be obtained, and to that end one method by means of which the desired result may be accomplished is to provide in-the wall of the outer receptacle a supplemental discharge outlet opening which is adapted to be opened and closed at will, the opening and closing of which supplemental discha ge outlet functioning to change the mode of operation of the apparatus to which the said receptacle is connected.

In the accompanying drawing there is shown a simple manner by means of which these results may be obtained, and in the drawing Figure 1 is a View partly in elevation and partly broken away of an impurities collect: ing receptacle constructed in accordance with the principles of this invention.

F1% 2 1s a sectional view taken on line 2-2 1g. 1.

Fig. 8 is a detail perspective yiew of the receptacle showing the supplemental discharge outlet opened to permit the escape of air currents.

This receptacle embodies an outer casing 10 of any suitable material that is impervious to air and is provided with adischarge outlet opening 11' through which the purified air is discharged.

The receptacle may be of any desired size and configuration and arranged therein is a filter which is here shown as embodying an inner casing the walls 12 of which are constructed of any suitable material which is pervious to air. The inner receptacle thus formed is of a size considerably smaller than the outer casing 10 so as to provide a sufiicient space for the air currents after they pass through the filter. The mate'rial of which the inner casing is constructed however is of such a nature that it will cause the impurities carried by the dust ladened air to be separated from the air currents before the latter pass through the filter. The dust-ladened air is conveyed into the receptacle through an inlet opening 13, and if desired a tubular extension 14 may be provided for the inlet opening 13 and which extension is preferably of a flexible nature, so that it will collapse and form a closure for the inlet opening 13 when the air currentsare not being directed therethrough and to prevent the escape of the impurities and foreign matter thus accumulated within the receptacle when a blast is not being created through the inlet opening 13.

In order that the impurities may be removed from the collector, there is provided the usual clean-out opening which is adapted to be closed. and maintained in its closed position by means of the usual clip 15 as is common in dev ces of this character.

It will therefore be seen with the construction as this far described that as the dustladened air enters the inlet opening 13 and inasmuch as the partition 12 is pervious to air but impervious to the impurities therein, the airiwill pass through the walls of the receptacle which latter act as a filter and the clarified air will pass into the outer receptacle 10 the walls of which are impervious to air and will be discharged through the outlet 11.

It has been found that it is sometimes advis'able and necessary to divert some of these air currents so as to reduce the pressure in the receptacle 10 and to prevent as much of the air currents as possible from passing through the outlet 11. To that end there is provided in the wall of the outer casing a supplemental discharge outlet opening 16 which may be constructed in any suitable manner and formed at any convenient point throughout the area of the outer receptacle. A convenient location for such a supplemental discharge outlet 16 is along one edge of the receptacle and a fastening clip 17 is provided for sealing the supplemental opening 16 closed. As here shown this fastening device 17 is in the form of a spring clip somewhat similar to the clip 15 and is adapted to slide over the adjacent edges of the supplemental opening 16 to close the latter. When it is desired to open the supplemental: opening 16 all thatis necessary is to slide the clip 17 along the edge of the casing to a different point along said edge so that the clip will be'supported by the edge of the casing and in a position to be again adjusted to close the supplemental opening 16.

Obviously the degree of movement of the fastening device 17 will control the size or extent of the'opening of the supplemental opening 16. 1

It will therefore be seen that in order to divert the air currents the supplemental opening 16 may be opened to any desired extent and when so open the air currents will pass through the supplemental opening 16. This discharge of the air currents will not be objectionable inasmuch as the air will be filtered before it passes through the out let opening 16.

While in the present form of the invention the inner and outer receptacles are here shown and described as being of a flexible name it is to be understood that the receptacle may be constructed of any material suitable for the purpose and of any desired size and configuration and the clean-out opening as well as the supplemental discharge outlet 16 may also be constructed in any suitable -manner and may be provided with any suitable closures.

Whatis claimed as new is:

' 1. An impurities collecting receptacle for cleaning apparatus, embodying an outer casing havmg walls impervlous to air and having a discharge outlet, filtering means Within the receptacle and through which filtering means the air currents pass before the air passes through the said outlet, an

inlet for conveying the impurities ladened' menace air into the receptacle, the said inlet and outlet being out of communication with each other except through the said filtering means, a supplemental air discharge outlet leading from the receptacle, means for controlling the last recited outlet, and means whereby. the impurities and foreign matters may be removed from the said receptacle while the receptacle remains intact.

2; An impurities collecting receptacle for cleaning apparatus, embodying an outer casing having walls impervious to air and having a discharge outlet, a filter within the receptacle and through which filter the air currents pass before the air passes through the said outlet, an inlet for conveying the impurities ladened airinto the receptacle, the said inlet and outlet being out of communication with each other except through the said filter, a supplemental air discharge outlet leading from the receptacle, means for controlling the last recited outlet, the said supplemental discharge outlet; and the said inlet being also out of communication with the said inlet-except through the said filter, and means whereby the impurities and foreign matter may be r'emoved from the I said receptacle while the receptacle remains lets, and means for closing said clean-out opening.

4. An impurities collecting receptacle for cleaning apparatus, embodying a casing the walls of which are lmpervious to air, said receptacle having an inlet for conveying impurities ladened air thereinto, means within the receptacle for removing the impurities from the air, said receptacle having two discharge outlets separate from each other, said outlets both being out of communication with the said inlet except through the said'means, means for sealing one of the said outlets closed, a cleanout opening separate from said inlet and outlet openings, and means for controlling the said clean-out opening.

5. An impurities collecting receptacle for cleaning apparatus, embodying a casing the walls of which are impervious to air, said receptacle having an inlet opening for conveying impurities ladened air thereinto,

means within the receptacle for removing the impurities from the air, said receptacle having two discharge outlet openings for the clarified air, said outlet openings being separate from each other, means for closing at will one of the said outlet openings to cause all of the air currents to flow through the other outlet opening, a clean-out open ing for the receptacle whereby the foreign matter and impurities may be removed while the receptacle remains intact, and means for securing the said clean-out opening closed.

(3. An impurities collecting bag or receptacle for cleaning apparatus, embodying a casing constructed of flexible material impervious to air, and having two discharge outlet openings, a partition in the sack through which the air currents pass to reinovethe impurities from the air before the air passes through either of the said outlets, an inlet for conveying the impurities ladened air into the bag or sack, both of the said outlets being out of communication with the said inlet except through the said partition, and a closure for one of the said outlets whereby the latter may be opened or closed at will.

T. An impurities collecting bag or receptacle for cleaning apparatus, embodying a casing constructed of flexible material impervious to air and having an inlet for conveying impurities ladened air into the casing, means within the casing for clarifying the air and collecting together the impurities removed from the air, said casing having two discharge outlets through which only the clarified air will flow, and means for controlling one of the said outlet openings whereby the latter may be opened or closed at will. Y

8. An impurities collecting bag or receptacle for cleaning apparatus, embodying a casing constructed of flexible material 1mpervious to air and havin an inlet for conveying impurities ladene air into the casing, means within the casing for clarifying the air and collecting together the impurities removed from the air, said casing having two discharge outlets through which only the clarified air will flow, means for controlling one of the said outlet openings whereby the latter may be opened or closed at will, a clean-out opening for the said receptacle, and means for securing the said clean-out opening closed.

In testimony whereof I have signed my name to this specification on this 11th day of May, A. D. 1920.

WILLIAM W. FARNSWORTH. 

